On Thursday, the 31-year-old "America's Got Talent" host was transported from an Aspen, Colo., hospital to one in Los Angeles. "Thank you for all your love, prayers and concern," he tweeted. "You know me. I will be a'ight."

Later in the evening, he tweeted a photo of himself getting a haircut with the caption, "Getting back to business."

Carey first confirmed that Cannon had been hospitalized on Wednesday, tweeting that he was being treated for "mild kidney failure."

She added that doctors tried -- and failed -- to remove her from her hubby's room. "I'm not trying to make light out of the situation because it's a serious moment that's very tough on all of us," she wrote. "So please keep us and our family in your prayers."